lucene-java-user mailing list archives

On Wed, Apr 18, 2012 at 9:27 AM, Vladimir Gubarkov <xonixx@gmail.com> wrote:
> Hi, dear Lucene specialists,
>
> The only explanation I could think of is the new TieredMergePolicy
> instead of old LogMergePolicy. Could it be that because of
> TieredMergePolicy merges not adjacent segments - this results in not
> preserving index order or this is total nonsense?
TieredMergePolicy will definitely shuffle the order of docs in your
index. But unless you provided a Version of Version.LUCENE_32 or later
when constructing your IndexWriterConfig, it shouldn't be using that
(and this won't happen automatically when you upgrade, unless you're
doing something odd like using LUCENE_LATEST...)
TX
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